JP2004149726A - Polychromatic and color-changing water-based ink composition for writing utensil and ballpoint pen using the composition - Google Patents

Polychromatic and color-changing water-based ink composition for writing utensil and ballpoint pen using the composition Download PDF

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Publication number
JP2004149726A
JP2004149726A JP2002319009A JP2002319009A JP2004149726A JP 2004149726 A JP2004149726 A JP 2004149726A JP 2002319009 A JP2002319009 A JP 2002319009A JP 2002319009 A JP2002319009 A JP 2002319009A JP 2004149726 A JP2004149726 A JP 2004149726A
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Prior art keywords
temperature
color
pigment
reversible thermochromic
complete
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JP2002319009A
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Japanese (ja)
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JP4376506B2 (en
Inventor
Katsuyuki Fujita
Yoshiaki Ono
義明 小野
勝幸 藤田
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Pilot Ink Co Ltd
パイロットインキ株式会社
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Priority to JP2002319009A priority Critical patent/JP4376506B2/en
Publication of JP2004149726A publication Critical patent/JP2004149726A/en
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Publication of JP4376506B2 publication Critical patent/JP4376506B2/en
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